Merge changes If37ef423,If93df3ae,I01b38637 into nyc-dev
am: df4e31b

* commit 'df4e31b031e14aacd8b1435ddf7a32923e6e1427':
  liblog: add __android_log_pmsg_file_read
  liblog: add __android_log_pmsg_file_write
  liblog: split out transports into separate files